Mobirise does not open in macOS Catalina

On a clean install of macOS Catalina Mobirise will install but not run: "Mobirise" can't be opened because Apple cannot check it for malicious software. The software needs to be updated. Contact the developer for more information.

It's a notarisation issue. All apps signed with a developer id have to notarised by Apple. We will need a new app installer. In the meantime, you can force the app to run by using Finder, navigating to /Applications, selecting list mode, right-click on Mobirise, click Open and the Open again. This is not secure as it circumvents Catalina's security. And it's very annoying.

There is NO problem with macOS Catalina and any version of Mobirise - I suggest you use Google Chrome to do the download - looks like you have a problem with Safari - I have 4 Macs under my control and all work 100% with Catalina and always have since the first beta was released back in June

Mobirise does have a problem with Catalina on my machine. I did download with Chrome and still the same issue as was mentioned at the top of the page. The developer will have to make changes and resubmit to Apple.

If you try to launch it and get the error... then after that go to System Preferences > Security & Privacy > General ... and you will see a notice that Mobirise attempted to run. You can then click to allow it to run anyway.

Bingo, many common apps like Mobirise have such an issue on macOS Catalina. Usually you can bypass this new macOS gateway by opening the app through System Preferences > Security & Privacy > Check Allow apps downloaded from App Store and identified developers > Click Open Anyway.

If it still doesn't work, I assume that you are double clicking on the Mobirise install icon, yes? Don't do that. Instead right mouse click on it. You should get an Open option in context menu: Select Open. Then the next dialog box you see will be similar to the one you report, but it will also have the Open button added. Choose Open and voila.

From my earlier postYou can also use this Terminal script:sudo spctl --master-disablePress Enter and you will get a Password prompt - enter your Computer Log-In password - you will NOT see it echo - press enter

The option was always available in earlier versions of macOS, so using the patch is no big deal - Best advice on a Mac is READ THE SCREEN - Don't click on anything if you don't know what it is- I have quiet a few Mac's under my control and have not had ANY security issues for over 15 years - The Macs all run 24/7